Question

A boy covers 50 m in 10sec,40m in next 10 sec and 30 m in the last 10 sec . Calculate the average speed of the boy.

Answer 1

average speed = total distance÷total time
average speed = (50+40+30)/10+10+10
= 120/30
= 4 m/s
please mark it as the brainliest

Answer 2

Answer:

The average speed of a boy will be 4 m/ sec

Explanation:

we have given in the question as

A boy first covers 50 m distance, in time 10 seconds

and after that he travels more and cover more 40m in time 10 seconds and again he travels more 30 m in 10 seconds time. We Need to calculate the average speed of a boy.

We know that the formula of average speed is

Average speed= Total distance travelled / total Time taken

Now put the above values in the formula we get.

50+40+30/10+10+10

=120/30

=4

hence the average speed of a boy is 4 m/sec.

which is the required answer.